<template>
  <div>
    <el-breadcrumb separator="/">
      <el-breadcrumb-item :to="{ path: '/' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图区域 -->
    <el-card class="box-card">
      <el-row :gutter="10">
        <el-col :span="10">
          <!-- 搜索与添加区域 -->
          <el-input placeholder="请输入内容" clearable v-model="queryInfo.query" @clear="getUserList"
            suffix-icon="el-icon-search" />
        </el-col>
        <el-col :span="6">
          <!-- 添加用户区域 -->
          <el-button type="primary" @click="addDialogVisible = true">添加用户</el-button>
        </el-col>
      </el-row>
      <!-- 用户列表 -->
      <el-table :data="userData.userList" style="width: 100%">
        <el-table-column prop="id" label="ID" width="80">
        </el-table-column>
        <el-table-column prop="username" label="姓名" width="100">
        </el-table-column>
        <el-table-column prop="email" label="邮箱" width="180">
        </el-table-column>
        <el-table-column prop="address" label="地址">
        </el-table-column>
        <el-table-column fixed="right" label="操作" width="100">
          <template slot-scope="scope">
            <el-button type="primary" icon="el-icon-edit" circle size="mini"></el-button>
            <el-button type="danger" icon="el-icon-delete" circle size="mini"></el-button>
          </template>
        </el-table-column>
      </el-table>
      <!-- 分页 -->
      <div class="block">
        <el-pagination @size-change="handleSizeChange" @current-change="handleCurrentChange" :current-page="1"
          :page-sizes="[2, 5, 10]" :page-size="2" layout="total, sizes, prev, pager, next" :total="userData.total">
        </el-pagination>
      </div>
    </el-card>
    <el-dialog title="添加用户" :visible.sync="addDialogVisible">
      <el-form label-width="80px" :model="addForm" :rules="addFormRules" ref="addFormRef">
        <el-form-item label="姓名" prop="username">
          <el-input v-model="addForm.username"></el-input>
        </el-form-item>
        <el-form-item label="密码" prop="password">
          <el-input v-model="addForm.password"></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="addForm.email"> </el-input>
        </el-form-item>
        <el-form-item label="地址" prop="address">
          <el-input v-model="addForm.address"> </el-input>
        </el-form-item>
      </el-form>
      <div slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addUser">确 定</el-button>
      </div>
    </el-dialog>
  </div>
</template>

<script>
  export default {
    name: 'UserList',
    data() {
      return {
        // 获取用户列表的参数对象
        queryInfo: {
          // 搜索值
          query: '',
          // 当前的页数
          pagenum: 1,
          // 当前每次显示多少条数据
          pagesize: 5
        },
        // 存放用户的数据和数量
        userData: {
          userList: [],
          total: 0
        },
        // 控制用户对话框的显示和隐藏
        addDialogVisible: false,
        // 添加用户数据的对象
        addForm: {
          username: '',
          password: '',
          email: '',
          address: ''
        },
        addFormRules: {
          username: [{
              required: true,
              message: '请输入用户名',
              trigger: 'blur'
            },
            {
              min: 3,
              max: 10,
              message: '长度在 3 到 10 个字符',
              trigger: 'blur'
            }
          ],
          password: [{
              required: true,
              message: '请输入密码',
              trigger: 'blur'
            },
            {
              min: 6,
              max: 15,
              message: '长度在 6 到 15 个字符',
              trigger: 'blur'
            }
          ]
        }
      }
    },
    created() {
      this.getUserList()
    },
    methods: {
      async getUserList() {
        const {
          data: res
        } = await this.$axios.post('/api/users', this.queryInfo)
        if (res.code !== 200) {
          this.$message.error('获取用户列表失败!')
        }
        this.$message.success('获取用户列表成功!')
        this.userData.userList = res.result
        this.userData.total = res.total
        console.log(res)
      },
      // 监听 pagesize 改变事件 每页显示的个数
      handleSizeChange(newSize) {
        // console.log(newSize)
        this.queryInfo.pagesize = newSize
        this.getUserList()
      },
      // 监听 页码值 改变的事件 当前页面值
      handleCurrentChange(newPage) {
        console.log(newPage)
        this.queryInfo.pagenum = newPage
        this.getUserList()
      },
      // 点击按钮,添加新用户
      addUser() {
        this.$refs.addFormRef.validate(async valid => {
          console.log(valid)
          if (!valid) return
          // 可以发起添加用户请求
          const {
            data: res
          } = await this.$axios.post('/api/addUser', this.addForm)
          if (res.meta.status !== 201) {
            return this.$message.error('用户添加失败了~')
          }
          // 隐藏添加用户的对话框
          this.addDialogVisible = false
          // 添加成后重新获取用户数据,不需要用户手动刷新
          this.getUserList()
          return this.$message.success('用户添加成功了~')
        })
      },
      // 展示编辑用于的对话框
      async showEditDialog(id) {
        const {
          data: res
        } = await this.$http.get('users/' + id)
        if (res.meta.status !== 200) {
          return this.$message.error('查询用户数据失败~')
        }
        this.editForm = res.data
        console.log(res)
        this.editDialogVisble = true
        return this.$message.success('查询用户数据成功~')
      },
      // 监听修改用户对话框的关闭事件
      aditClosed() {
        this.$refs.editFormRef.resetFields()
      },
      editUserInfo() {
        this.$refs.editFormRef.validate(async valid => {
          console.log(valid)
          if (!valid) return
          // 发起修改用户信息的数据请求
          const {
            data: res
          } = await this.$http.put('users/' + this.editForm.id, {
            email: this.editForm.email,
            mobile: this.editForm.mobile
          })
          if (res.meta.status !== 200) {
            this.$message.error('更新用户信息失败!')
          }
          this.editDialogVisble = false
          this.getUserList()
          this.$message.success('更新用户信息成功!')
        })
      },
      // 根据id删除对应的用户信息
      async removeUserById(id) {
        // 询问用户是否删除用户
        const confirmRusult = await this.$confirm('此操作将永久删除该文件, 是否继续?', '永久删除该用户', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).catch(err => err)
        console.log(confirmRusult)
        // 用户点击了删除,则返回字符串 confirm
        // 用户取消了删除,则返回字符串 cancel
        if (confirmRusult !== 'confirm') {
          return this.$message.info('已经取消了删除')
        }
        this.$http.delete('users/' + id).then(res => {
          const {
            data: response
          } = res
          console.log(response)
          if (response.meta.status !== 200) {
            return this.$message.error('该用户删除失败')
          }
          this.$message.success('该用户已经删除')
          this.getUserList()
        })
      }
    }
  }
</script>

<style scoped>
  .el-card {
    margin-top: 15px;
  }

  .block {
    margin-top: 10px;
  }
</style>
